Yeah, his run for senate has perplexed me. Were I Warner, I probably would have just endorsed and accepted the #2 slot to Hillary Clinton, and, if re-elected, made a run for the Presidency in 2016. His decision to run for senate kinda makes me believe he doesn't really want to be President.
How many terms can he last in the senate untill he becomes vulnerable for re-election, assuming the Republicans don't stay in the dumps? I mean, he was a sucessful governor, but with two Democratic senators Virginia is not exactly reppresented properly.
If he's a good Senator, he can last indefinitely, just like John Warner did. Our state has a history of voting for our senators based on performance more than party. Moderate Democrats can be successful here, and we even had an Independent Senator, Harry F. Byrd Jr., for years.